consept based questions chapter 1 matter in our srounding
Answers
Answer:
Question 1.
Is there any similarity in materials?
Answer:
Yes, all materials possess mass and occupy space.
Question 2.
When 50 g of sugar is dissolved in 100 mL of water, there is no increase in volume. What characteristic of matter is illustrated by this observation?
Answer:
This observation indicates that particles of water have spaces between them into which sugar particles fit.
Question 3.
What happens when an inflated air balloon is pricked with a pin? Name the property of the gaseous state exhibited by this observation.
Answer:
The balloon bursts and diffusion takes place.
Question 4.
Name the process which occurs when a drop of dettol is added to water.
Answer:
When dettol is added to water, diffusion takes place.
- Question :- When a gas jar full of air is placed upside down on a gas jar full of bromine vapours, the red-brown vapours of bromine from the lower jar go upward into the jar containing air. In this experiment:
- (a) Air is heavier than bromine
- (b) Both air and bromine have the same density
- (c) Bromine is heavier than air
- (d) Bromine cannot be heavier than air because it is going upwards against gravity
Ans :- option © Bromine is heavier than air .